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Windows Analysis Report
file.exe

Overview

General Information

Sample Name:file.exe
Analysis ID:764030
MD5:2365cd5930c2845769177b920d4b8ad6
SHA1:1246c7f15b215bf1ecc70294434ccd19a1778daf
SHA256:77bfc0f4bf45082fc3c52c3c10d4394d925c116fda4b3eda7f09151a57ad4010
Tags:exe
Infos:

Detection

Amadey
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Yara detected Amadeys stealer DLL
Malicious sample detected (through community Yara rule)
Detected unpacking (overwrites its own PE header)
System process connects to network (likely due to code injection or exploit)
Detected unpacking (changes PE section rights)
Antivirus detection for URL or domain
Antivirus detection for dropped file
Multi AV Scanner detection for dropped file
Tries to steal Mail credentials (via file / registry access)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal ftp login credentials
Machine Learning detection for sample
Contains functionality to inject code into remote processes
Creates an undocumented autostart registry key
Machine Learning detection for dropped file
C2 URLs / IPs found in malware configuration
Uses schtasks.exe or at.exe to add and modify task schedules
Tries to steal Instant Messenger accounts or passwords
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Contains functionality to check if a debugger is running (IsDebuggerPresent)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
PE file contains sections with non-standard names
Internet Provider seen in connection with other malware
Detected potential crypto function
Contains functionality to query CPU information (cpuid)
Found potential string decryption / allocating functions
Sample execution stops while process was sleeping (likely an evasion)
Found dropped PE file which has not been started or loaded
Contains functionality to record screenshots
Contains functionality which may be used to detect a debugger (GetProcessHeap)
IP address seen in connection with other malware
Contains long sleeps (>= 3 min)
Abnormal high CPU Usage
Creates a DirectInput object (often for capturing keystrokes)
Drops PE files
Contains functionality to read the PEB
Uses cacls to modify the permissions of files
Contains functionality to launch a program with higher privileges
Dropped file seen in connection with other malware
Found large amount of non-executed APIs
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • file.exe (PID: 204 cmdline: C:\Users\user\Desktop\file.exe MD5: 2365CD5930C2845769177B920D4B8AD6)
    • gntuud.exe (PID: 3332 cmdline: "C:\Users\user\AppData\Local\Temp\9c69749b54\gntuud.exe" MD5: 2365CD5930C2845769177B920D4B8AD6)
      • schtasks.exe (PID: 1496 cmdline: "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN gntuud.exe /TR "C:\Users\user\AppData\Local\Temp\9c69749b54\gntuud.exe" /F MD5: 15FF7D8324231381BAD48A052F85DF04)
        • conhost.exe (PID: 1680 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
      • cmd.exe (PID: 5268 cmdline: "C:\Windows\System32\cmd.exe" /k echo Y|CACLS "gntuud.exe" /P "user:N"&&CACLS "gntuud.exe" /P "user:R" /E&&echo Y|CACLS "..\9c69749b54" /P "user:N"&&CACLS "..\9c69749b54" /P "user:R" /E&&Exit MD5: F3BDBE3BB6F734E357235F4D5898582D)
        • conhost.exe (PID: 6084 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
        • cmd.exe (PID: 1372 cmdline: C:\Windows\system32\cmd.exe /S /D /c" echo Y" MD5: F3BDBE3BB6F734E357235F4D5898582D)
        • cacls.exe (PID: 6060 cmdline: CACLS "gntuud.exe" /P "user:N" MD5: 4CBB1C027DF71C53A8EE4C855FD35B25)
        • cacls.exe (PID: 4692 cmdline: CACLS "gntuud.exe" /P "user:R" /E MD5: 4CBB1C027DF71C53A8EE4C855FD35B25)
        • cmd.exe (PID: 5256 cmdline: C:\Windows\system32\cmd.exe /S /D /c" echo Y" MD5: F3BDBE3BB6F734E357235F4D5898582D)
        • cacls.exe (PID: 5024 cmdline: CACLS "..\9c69749b54" /P "user:N" MD5: 4CBB1C027DF71C53A8EE4C855FD35B25)
        • cacls.exe (PID: 1312 cmdline: CACLS "..\9c69749b54" /P "user:R" /E MD5: 4CBB1C027DF71C53A8EE4C855FD35B25)
      • rundll32.exe (PID: 1276 cmdline: "C:\Windows\System32\rundll32.exe" C:\Users\user\AppData\Roaming\85f469ce401df1\cred64.dll, Main MD5: D7CA562B0DB4F4DD0F03A89A1FDAD63D)
  • gntuud.exe (PID: 6036 cmdline: C:\Users\user\AppData\Local\Temp\9c69749b54\gntuud.exe MD5: 2365CD5930C2845769177B920D4B8AD6)
  • cleanup
{"C2 url": "31.41.244.237/jg94cVd30f/index.php", "Version": "3.50"}
SourceRuleDescriptionAuthorStrings
C:\Users\user\AppData\Local\Microsoft\Windows\INetCache\IE\2WF3MMUU\cred64[1].dllJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
    C:\Users\user\AppData\Local\Microsoft\Windows\INetCache\IE\2WF3MMUU\cred64[1].dllINDICATOR_TOOL_PWS_AmadyDetects password stealer DLL. Dropped by AmadeyditekSHen
    • 0xd86c:$s1: Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData
    • 0x15608:$s1: Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData
    • 0x16078:$s1: Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData
    • 0x1515c:$s2: Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook
    • 0x151c0:$s2: Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook
    • 0xdd10:$s3: \Mikrotik\Winbox\Addresses.cdb
    • 0x190dc:$s4: \HostName
    • 0x19104:$s5: \Password
    • 0x17c08:$s6: SOFTWARE\RealVNC\
    • 0x17c34:$s6: SOFTWARE\RealVNC\
    • 0x17c60:$s6: SOFTWARE\RealVNC\
    • 0x17ca8:$s6: SOFTWARE\RealVNC\
    • 0x17cd4:$s6: SOFTWARE\RealVNC\
    • 0x1800c:$s7: SOFTWARE\TightVNC\
    • 0x18038:$s7: SOFTWARE\TightVNC\
    • 0x18064:$s7: SOFTWARE\TightVNC\
    • 0x180b0:$s7: SOFTWARE\TightVNC\
    • 0x1c43c:$s8: cred.dll
    C:\Users\user\AppData\Roaming\85f469ce401df1\cred64.dllJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
      C:\Users\user\AppData\Roaming\85f469ce401df1\cred64.dllINDICATOR_TOOL_PWS_AmadyDetects password stealer DLL. Dropped by AmadeyditekSHen
      • 0xd86c:$s1: Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData
      • 0x15608:$s1: Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData
      • 0x16078:$s1: Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData
      • 0x1515c:$s2: Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook
      • 0x151c0:$s2: Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook
      • 0xdd10:$s3: \Mikrotik\Winbox\Addresses.cdb
      • 0x190dc:$s4: \HostName
      • 0x19104:$s5: \Password
      • 0x17c08:$s6: SOFTWARE\RealVNC\
      • 0x17c34:$s6: SOFTWARE\RealVNC\
      • 0x17c60:$s6: SOFTWARE\RealVNC\
      • 0x17ca8:$s6: SOFTWARE\RealVNC\
      • 0x17cd4:$s6: SOFTWARE\RealVNC\
      • 0x1800c:$s7: SOFTWARE\TightVNC\
      • 0x18038:$s7: SOFTWARE\TightVNC\
      • 0x18064:$s7: SOFTWARE\TightVNC\
      • 0x180b0:$s7: SOFTWARE\TightVNC\
      • 0x1c43c:$s8: cred.dll
      SourceRuleDescriptionAuthorStrings
      00000008.00000002.385428058.0000000000950000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
        00000008.00000002.385428058.0000000000950000.00000040.00001000.00020000.00000000.sdmpWindows_Trojan_Smokeloader_3687686funknownunknown
        • 0x30d:$a: 0C 8B 45 F0 89 45 C8 8B 45 C8 8B 40 3C 8B 4D F0 8D 44 01 04 89
        00000000.00000002.314114177.0000000000400000.00000040.00000001.01000000.00000003.sdmpJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
          00000000.00000002.314298922.00000000006E3000.00000040.00000020.00020000.00000000.sdmpWindows_Trojan_RedLineStealer_ed346e4cunknownunknown
          • 0x1640:$a: 55 8B EC 8B 45 14 56 57 8B 7D 08 33 F6 89 47 0C 39 75 10 76 15 8B
          00000000.00000003.311169503.0000000000650000.00000004.00001000.00020000.00000000.sdmpJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
            Click to see the 6 entries
            SourceRuleDescriptionAuthorStrings
            8.3.gntuud.exe.990000.0.raw.unpackJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
              0.2.file.exe.5f0e67.1.raw.unpackJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
                8.2.gntuud.exe.950e67.1.unpackJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
                  8.2.gntuud.exe.400000.0.raw.unpackJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
                    1.3.gntuud.exe.2120000.0.unpackJoeSecurity_Amadey_2Yara detected Amadey\'s stealer DLLJoe Security
                      Click to see the 9 entries
                      No Sigma rule has matched
                      No Snort rule has matched

                      Click to jump to signature section

                      Show All Signature Results

                      AV Detection

                      barindex
                      Source: 31.41.244.237/jg94cVd30f/index.phpAvira URL Cloud: Label: malware
                      Source: http://31.41.244.237/jg94cVd30f/index.phpMAvira URL Cloud: Label: malware
                      Source: C:\Users\user\AppData\Local\Microsoft\Windows\INetCache\IE\2WF3MMUU\cred64[1].dllAvira: detection malicious, Label: HEUR/AGEN.1233121
                      Source: C:\Users\user\AppData\Roaming\85f469ce401df1\cred64.dllAvira: detection malicious, Label: HEUR/AGEN.1233121
                      Source: C:\Users\user\AppData\Local\Microsoft\Windows\INet